GHSA-773g-x274-8qmf · 深刻度： high · エコシステム： swift — SwiftNIO Extras vulnerable to improper detection of complete HTTP body decompression
Improper detection of complete HTTP body decompression SwiftNIO Extras provides a pair of helpers for transparently decompressing received HTTP request or response bodies. These two objects (HTTPRequestDecompressor and HTTPResponseDecompressor) both failed to detect when the decompressed body was considered complete. If trailing junk data was appended to the HTTP message body, the code would repeatedly attempt to decompress this data and fail. This would lead to an infinite loop making no forward progress, leading to livelock of the system and denial-of-service. This issue can be triggered by any attacker capable of sending a compressed HTTP message. Most commonly this is HTTP servers, as compressed HTTP messages cannot be negotiated for HTTP requests, but it is possible that users have configured decompression for HTTP requests as well. The attack is low effort, and likely to be reached without requiring any privilege or system access. The impact on availability is high: the process immediately becomes unavailable but does not immediately crash, meaning that it is possible for the process to remain in this state until an administrator intervenes or an automated circuit breaker fires. If left unchecked this issue will very slowly exhaust memory resources due to repeated buffer allocation, but the buffers are not written to and so it is possible that the processes will not terminate for quite some time. This risk can be mitigated by removing transparent HTTP message decompression. The issue is fixed by correctly detecting the termination of the compressed body as reported by zlib and refusing to decompress further data. The issue was found by Vojtech Rylko (https://github.com/vojtarylko) and reported publicly on GitHub.
総合評価: CVE-2022-3252 は中リスク（48.9/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.32%、54 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2025-09-23 | 0.41% | 0.32% | -0.09% |
| 2 | 2025-09-22 | 0.06% | 0.41% | +0.36% |
| 3 | 2023-08-22 | — | 0.06% | — |
EPSS の全履歴 （全 5 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-773g-x274-8qmf · 深刻度： high · エコシステム： swift — SwiftNIO Extras vulnerable to improper detection of complete HTTP body decompression
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apple | swift-nio-extras | < 1.9.2 | cpe:2.3:a:apple:swift-nio-extras:*:*:*:*:*:*:*:* |
| apple | swift-nio-extras | >= 1.10.0, < 1.10.3 | cpe:2.3:a:apple:swift-nio-extras:*:*:*:*:*:*:*:* |
| apple | swift-nio-extras | >= 1.11.0, < 1.14.0 | cpe:2.3:a:apple:swift-nio-extras:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/apple/swift-nio-extras/security/advisories/GHSA-773g-x274-8qmf | Third Party Advisory |